Nut-lock.



' G.. PIBTRZAK.

NUT LOCK.

APPLIOATION FILED SEPT. 1s, 1912.

, 1,066,3 1 5, Ptented July 1V, 1913.

1x.. n ...n

UNITED STATES PATENT OFFICE.

GEORGE PIETRZAK, 0F MONTESANO, WASHINGTON.

NUT-LOCK.

To all whom t may concern:

Be it known that I, GEORGE PIETRZAK, a citizen ot' the United States, residing at Montesano, in the county of Chehalis and State of lVashington, have invented new and useful Improvements in Nut-Locks, of which the vfollowing is a specification.

This invention relates to nut locks and the principal object of the invention is the provision of a simple and elficient device of this character which will lockrall of the nuts upon one side of a fish plate and which is retained in position by the inherent resiliency of a portion of the same so that by springing the portion the nut lock may be readily removed for tightening or removing the nuts.

Further objects of this invention will appear as the following specific description is read in connection with the accompanying drawing which forms a part of this application, and in which:-

Figure l is a side elevation showing the device applied to the nuts on the rail joint. Fig. 2 is a horizontal sectional view. Fig. 3 is a transverse vertical section taken on the line 3-3 of Eig. l. Fig. l is a detail perspective vview of one end of the locking plate.

The invention is illustrated in connection with an ordinary joint chair 1 which joins the rails 2 and 3 together and supports the same as will be readily understood, the vertical lianges of the chair acting as fish plates and being connected together by the bolts l which are held in position by the nuts 5.

Specification of Letters Patent.

Application filed September 13, 1912.

seriai No. 720,258,

Patented July 1 ,1913.

The nut lock comprises an elongated plate 6 of suitable metal and provided with down turned ends ork flanges 7 adapted to engage the ends of the vertical flanges oli' the joint chair. The plate is provided with a. plurality of square apertures 8 to receive the nuts 5 and has centrally formed thereon between the two middle apertures a raised loop 9. The plate is constructed of a metal having suflicient inherent resiliency in the loop 9 to draw the ends 7 against the ends of the vertical flanges and thereby hold the plate in position to lock the nuts. By applying pressure upon the loop 9 the ends are caused to be spread apart thereby permitting the removal of the plate when desired.

Vhat is claimed is A nut lock lcomprising a flat spring plate having its terminals bent at right angles to GEORGE PIETRZAK.

Vitnesses ANDREW PIETRZAK, AGNES CONNOR.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

